Characters played by Edmund Lowe
Philo Vance
Characters played by Virginia Bruce
Zalia Graem
Characters played by Benita Hume
Nurse Gladys Beeton
Characters played by Douglas Walton
Floyd Garden
Characters played by Nat Pendleton
Police Sgt. Ernest Heath
Characters played by Gene Lockhart
Edgar Lowe Hammle
Characters played by H.B. Warner
Major Fenwicke-Ralston
Characters played by Kent Smith
Woode Swift
Characters played by Grant Mitchell
District Attorney Markham
Characters played by Frieda Inescort
Mrs. Fenwicke-Ralston
Characters played by Henry B. Walthall
Dr. Garden
Characters played by Jessie Ralph
Mrs. Hammle
Characters played by Charles Trowbridge
Inspector Colby
Characters played by Etienne Girardot
Dr. Doremus
Characters played by William Austin
Sneed - Hammle's Butler
Characters played by Don Brodie
Messenger
Characters played by Olaf Hytten
Vance's Butler
Characters played by Rosalind Ivan
Mrs. Jepson - Hammle's Housekeeper
Characters played by Fred Kelsey
Heath's Assistant
Characters played by Wilbur Mack
Man Yelling at Race Track
Characters played by Lee Phelps
Bus Driver
Characters played by Alexander Pollard
Waiter at Race Track
Characters played by Jack Roper
Servant Eating Caviar
Characters played by Matty Roubert
Newsboy
Characters played by Dorothy Vernon
Woman Running for Bus
Characters played by Duke York
Traffic Cop